Toggle



Oct 13, 192-5. 1,557,396

E. B. AYRES ET AL. I

TOGGLE Filed May 27, 1924 Fa'tented 13, 11925.

entree.

ELVJOQD B. AYLRES, F THEIR/USE PARK, AND CHARLES S. MORRISON, OF JELKINSPARK, PENNSYLVANIA, ASSIGNORS TD PRUCTOIR dz SCHW'ARTZ, INCORPQRATED,01* PHIJLA- DELPI-HA, PENNSYLVANIA, A CGEPORATTUN 0F PENNSYLVANIA.

TQGGLE.

Application filed May 2'2, 19%.

To alZ whom it may concern.

Be it known that We, ELwoon B. Areas and Cinmnics S. Momuson, citizensof the l'niled States, residing, respectively, in Melrose Park,Montgomery County, Pennsylvania, and Elkins Park, Montgomery County,Pennsylvania, have invented certain TH'XPIOYQXIIGHES in Toggles, ofwhich the following is a specification.

Our invention relates to certain improvements in toggles used instretching leather on drying frames during the process of manufacture.

The object of our invention is to improve the construction of the toggleso as to allow it to be used in stretching the leather and to hold it inthe stretched position. This object is attained in the following manner,reference being had to the accompanying drawings, in which,

Fig. 1 is a perspective view of our improved "toggle;

Fig. 2 is a side View showing the toggle in the open position;

Fig. 3 1s a sectional View showing the toggle in the closed or grippingposition;

Fig. 4 is a sectional View on the T 1g. 2; I Fig. 5 tric aw;

Fig. 6

line H,

is a perspective view of the eccenis a perspective view of the handlever for closing the toggle; and

Fig. 7 is a View illustrating a modification of the invention.

The body 1 of the toggle is made of spring metal and is bent, in thepresent instance, as clearly shown in the drawings, so as to form a backplate 2, and a clamping plate 3. Punched from the back plate is a hook4, which is arranged to engage a supporting frame 5 that may have a bodyin the form of a wire screen, or perforated metal. A looped portion 6 ofthe toggle not only forms a spring member, but also is shaped to providea finger hold by which the operator can engage the toggle and canstretch the leather to the desired extent. The leather is shown as a, inFig. 3.

Two bearings 7 are formed on the back plate for the trunnions 8 of aneccentric jaw 9, having teeth 10 which are shaped, preferably as shownin Figs. 2 and 5. This jaw has a tongue 11, which extends between thetwo members of a U-shaped bearing 12 Serial Ito. $16,134.

that extends through slots in the back plate 2, and through slots in theclamping plate 3. Pivoted at 13 to the til-shaped bearing 12 is a handlever 14. On the short arm of this lever is a pin 15, on which ismounted a roller 16. This roller bears upon the clamping plate 3 andforces the clamping plate towards the jaw 9, when the lever lfl is movedfrom the position shown in Fig. 2 to that shown in Fig. 3. When the edgeof the leather is inserted in the space between the clamping shown inFig. 3, its pivot, it will and the lever is turned on clamp the leatheronto the jaw. i l hen the hook 4 is in position to engage the frame 5,any pull upon the toggle by the operator will tend to turn the eccentricjaw 9 on its pivot, thereby increasing its grip upon the leather.

The lever 14, in the present instance, has a flange 17, which forms astop, as shown in Figs. 3 and 6, that prevents the lever 14 passingbeyond the position illustrated in Fig. 2. The lever comes in contactwith the portion 6 of the toggle, and limits its movement in theopposite direction. When the lever is in the position illustrated inFig.3, th roller 16 is on one side of the pivot and locks the clamping plate3 in position. In Fig. 7 is illustrated a modification of the invention,in which a clamping plate 3 is independent of a body 1 of the toggle andis shaped, as shown, to form a rounded bearing '3" for a cam 14*, havinga handle 14:". The end of the clamping plate extends through a backplate 2 and forms a hook 4. The cam 14c is mounted on a bolt 18 and onthe bolt is a spring 19, which tends to force the clamping plate 3 awayfrom an eccentric jaw 9 that is preferably made in the same manner asthe jaw 9, with the exception of the tongue 11, which may be omitted.llt will be seen that a toggle made in accordance with our inventionpositively engages the leather, and retains its grip on the leather asthe leather is stretched onto the frame.

The greater the pull, the tighter the leather is gripped by theeccentric jaw.

lit will be understood that in stretching leather on a frame during theprocess of manufacture, there are a number of these toggles locatedaround the leather, so that it can be stretched to the desired extent,

plate 3 and the jaw, as

and the toggles secured to the frame, the leather being held firmlyduringthe drying operation. {a

We claim:

1. The combination in a toggle, of a body portion having aback plate anda clamp plate integrally connected by a spring section; aneccentric jaw"pivotally mounted on one of said plates; and means for forcibly movingthe clamp plate towards the back plate.

2. The combination in a toggle, of a body portion having a back plateand a clamp plate; an eccentric jaw pivotally mounted eaf/nee on theback plate; and means for forcing the clamp plate towards the jaw.

3. The combination in a toggle, of a body portion shaped to form a backplate, a clamp plate and a spring connecting member tending to open thetoggle; a bearing secured to the back plate and extending through theclamp plate; an operating lever pivotally mounted in the bearing; and aroller carried by the lever, said roller having a rolling contact Withthe clamp plate as the lever is turned on its pivot.

' ELWOOD B. AYBES.

CHARLES S. MORRISON

